package com.isa.http;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

import javax.net.ssl.HttpsURLConnection;

import com.isa.ssl.HTTPSCoder;
import com.isa.util.Arguments;

public class HttpClientTest {
	/**
	 * 向指定URL发送GET方法的请求
	 * @param url 发送请求的URL
	 * @param params 请求参数，请求参数应该是name1=value1&name2=value2的形式。
	 * @return URL所代表远程资源的响应
	 */
	public static String sendGet(String url, String params) throws Exception
	{
		String result = "";
		BufferedReader in =  null;
			String urlName = url + "?" + params;
			System.out.println(urlName);
			URL realUrl = new URL(urlName);
			HttpsURLConnection conn = (HttpsURLConnection) realUrl.openConnection();
			conn.setDoInput(true);
			HTTPSCoder.configSSLSocketFactory(conn);
			// 打开和URL之间的连接
//			URLConnection conn = realUrl.openConnection();
//			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent",
				"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");
//			 建立实际的连接
			conn.connect(); 
			// 获取所有响应头字段
			Map<String, List<String>> map = conn.getHeaderFields();
			// 遍历所有的响应头字段
			for (String key : map.keySet())
			{
				System.out.println(key + "--->" + map.get(key));
			}
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(
				new InputStreamReader(conn.getInputStream()));
			String line;
			while ((line = in.readLine()) != null)
			{
				result += line;
			}
		// 使用finally块来关闭输入流
			try
			{
				if (in != null)
				{
					in.close();
				}
			}
			catch (IOException ex)
			{
				ex.printStackTrace();
			}
		return result;
	}

	/**
	 * 向指定URL发送POST方法的请求
	 * @param url 发送请求的URL
	 * @param params 请求参数，请求参数应该是name1=value1&name2=value2的形式。
	 * @return URL所代表远程资源的响应
	 */
	public static String sendPost(String url, String params) throws Exception
	{
		PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent",
				"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(params);  //②
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(
				new InputStreamReader(conn.getInputStream()));
			String line;
			while ((line = in.readLine()) != null)
			{
				result += "\n" + line;
			}
		// 使用finally块来关闭输出流、输入流
			try
			{
				if (out != null)
				{
					out.close();
				}
				if (in != null)
				{
					in.close();
				}
			}
			catch (IOException ex)
			{
				ex.printStackTrace();
			}
		return result;
	}
	
}
